Stitch-forming mechanism.



B. H. THEISEN & G. S- KELLER. STITCH FORMING MECHANISM. APPLICATION FILED mu 7, 1009. H Patented July 5, 1910.

2 SHEETS-SHEET 1.

B. H. 'THBISEN & G. S. KELLER. STITCH FORMING MECHANISM. APPLIOATIOK FILED an 7, 1909.

Patented July 5, 1910.

viz/10151440 iayy o UNITED STATES PATENT oFFrcE.

1 nnngno H. 'rnnrsnn Aw some xnnpna; camaraderie, MInNnso'rAcf STITCH-FORMING MECHANISM.

Specification of'Letters Patent. Patented July 5 1910.

Application filed May 7', 1909. Serial no; 494,679.

To all whom it may concern:

Be it known that we, BRUNO H. THnisnN. and GEORGE S. KELLER, both of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Stitch-Forming Mechanism, of which the following is a specification.

ous constructions and combination, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure l is a front View of the upper portion of a stitch ing 'ma'chine, embodying our invention Fig. 2 is aside View partially in section of the sam'e, Fig. 3 is a detail view of the stitchforming jaws, showing the awlq passing R carried by the jaw 5. A secondary jaw 9.

through the material, Fig. 4 is a smiliar view, illustrating the awl withdrawn from the material and the needle inserted through the hole therein in the act of picking up the thread, Fig; his a sectional View on the line X-X of Fig. 3, Fig. 6 is a detail view, showing the needle withdrawn from the material, pulling the thread with it. Fig. 7 illustrates a shuttle in the act of disengag- '.iug the thread from the needle, Fig. 8 is a detail view of the awl jaw.

Inthe drawing, 2 represents the sta ndards supporting the mechanism, of the ma chme, 3 a. crank shaft and i a cam mounted thereon.

, 5 is a needle j awloosely mounted on the shaft 6 and operated through a rod 7 carried by the crank shaft 3. The needle 8' is ismounted on the under side of the jaw 5 bymeans of a bolt 10, which prevents independent vertical movement of the jaw 9, but allows itto oscillate laterally with respect to the jaw 5. A spring 11 normally tends to press the jaw 9 away from the jaw 5, and an adjustingscrew 12, mounted in the jaw 5, fits within a socket in the jaw 9 and regulates the lateral movement thereof,

the invention is to provide" vide a plate 23 (see Fig. 5)

according to the len of stitch .or the feed desired. The jaw 9 as an'upwardly curved which is, provided with an anti-frictionwheel 20 in the pathiof the cam 4. An adjusting screw 21 is mounted on the arm 18 in position to engage the lever 19 and regulate 'its time of engagement with the cam. When the lever is en aged by the cam, the post 17 will be rotated a predetermined dis tance, according to the position of the lever 19, with respect to its supporting arm.

. At the upperend of the post 17 we provide an arm 22, which, during a portion of its stroke, is adapted to engage the jaw 9 and press it toward the jaw 5 against the tension of the spring 11, the said jaw 9 swinging on the bolt 10, as heretofore described. .During the down stroke of the crank shaft, and its connecting rod, the os cillation of the jaw 5 will force the awl up engagement of the needle with the thread.

in the spams beneaththe work plate, we p"oivoted at 24c on the work plate and adapte to swing in a horizontal plane-thereunder and having a part to engage the loose end of the thread and push it around into the path of the hook or notch in the endof the. needle, so

that when the needle ascends, it will pull the thread up through the hole in the leather made by theawl.

To operate. the plate 23 at the-proper time, we provide an arm- 25, pivot-ally attached at one end to the plate 23 and at .its other end to the arm 22 (see Figs. 2 and 5). The movement of the arm 22 iszcontrolled by the rocking of the post 17 so needle operate, a plate operated to en-, swung around to cause the engagement of gage the threadand move it into the path the thread with th' notch in the needle. of said needle, a swinging arm arrange I mounted the re1n, a need means for rotating said post at predeterjaw and a needle ,in' a plane at an therein, the

. thriou h by the awl, and means operating I Path of the needle. l 5."In a stitchin intervals.

- needle jaw and l path of said oscillating jaw,

that at the proper time, the plate 23 will be I and We claim as our vention:-- 1. In a stitching machine, the tion, with an oscillating jaw an mounted therein, carried by said vided with an awl. and arranged to swing at right angles substan ially to the plane of said first-named jaw, a work plate having an opening throu h which said awl an needle operate a p ate arranged to oscillate in a horizonta plane and engage the thread and move it in the path of said needle, and a swinging arm arran ed to engage and operate said awl jaw an connected with said same at predetermined .en age and ress said awl jaw into the plane of said osc' ating jaw an a link pivotally varm with said plate, for the connecting sai purpose specific 6. The combination, with an oscillating needle jaw and needle, of a work plate, a pivoted plate arranged to engage'the thread under said it into the ath of the needle, an awl jaw and awl thereor, means for actuating said feed the goods and a link pivotally connecting said pivoted plate with said awl jaw actuating means. j r

7. The combination, with an oscillating needle jaw 'and needle, 0 a work plate, a thread engaging late,- an awl jaw and therefor, means r actuating said awl jaw to feed the goods, and means pivotally connecting said awl jaw actuating means an said thread engaging plate, for the purpose specified.

8. .In a stitching machine, the combination, with a work plate, of a needle jaw and means for oscillating the same,-an awl vjaw ivoted on said needle jaw, a s ring ndrmally'holding said awl jaw out o of said needle jaw,.means for pressing sai awl jawltoward said needle jaw, a late pivoted beneath said work late an a apted to engage the thread, an a link pivotally connecting saidplate with said awl 'aw pressing means, substantially as described.

9. In a stitching machine, the combinacombinaa needle of a secondary orawl jaw first named jaw and pro-- plate to operate the 2. In a stitching machine,

t on,

the combina; with a'zsuitable frame, of

a needle aw le carried thereby having a notched lower end, an awl 'aw ar ranged to oseillate at an angle to sai needle jaw and having an aw, a rotating post mounted in said frame, an arm moun thereon in position to operate said awl jaw, a work plate having an opening'to receive said awl and raeedle, a pivoted plate connected with sai arm and arranged to oscil-z late therewith and engage the thread and move it into the path of said needle, and

mined intervals.

3. The combination, a nee with an oscillating e -mounted therein,

provided with a hooked lower end, 0 tion, with'a work plate of a pivoted thread work plate having a hole through which ng gmg plat a n e aw, an awl jaw said needle operates, and a horizontally operating plate pivoted on said work late and to engage. the thread an push it an osciloscillating movement with said needle aw, and a similar movement independent of said needle jaw, means for operating said awl jaw independently of sa d needle jaw, an means connecting sai thread-engaging plate with said awl jaw operating means. 10. In a stitching machine, .the combination, with a work plate,- of/a' thread engaging plate, a needle jawjnd needle, an awl jaw and awl carried llier'eby, an arm arran ed to engage andzactuate said awl jaw to eed the goods, and a link connecting thread engaging plate, for

having an ally connected 4. Th'e combination, with an oscillating mounted therein, of an. awl jaw pivoted on said oscillating jaw and provided with an awl, said awl jaw swinging angleto the plane of sai a work plate having a means for pressing the awl jaw into pathof the needle jaw, nieans for 0s,- cillating 'said jaw to first push the awl the material and then withdraw it and direct the needle through the hole made below the the thread into the needle jaw,

said-arm and said the purposespecified. 11. In a stitch'ng'=machine, tion, withv arwork'p ate, of'a thread engaging means, a needle jaw and needle, and aw jaw and awl, a rotating post, means carried thereby and arrangedto actuate said aw jaw, andv means ,pivotally connecting sai thread engaging means and said awl jaw actuating means, for the purpose speci e 12. The combination, with a work plate of a needle jaw and needle, an awl'juw ant awl therefor, a thread engaging a dis posed near said work plate, a rotating post -work plate for directing machine, tho combination,'with an osci ating jaw, and a needle mounted therein, of a" secon ary or awl jaw first named jaw and prowith an awl and normally out of the a work late aving an opening through which sai aw the combina-' awl jaw to feed the goods, and means connecting said 2W1 121W actuating means and said thread engaging plate.

In witness whereof, we have hereunto set 15 our hands this 243th day of April, 1909.

BRUNO H. THEISEN. GEORGE S. KELLER.

Witnesses J nssn: 1W SULLIVAN, RICHARD PAUL. 

